Flexible transmission



June 15 1926. 1158?),108

E. CARETTA FLEXIBLETRANSMISSION Filed Nov. 15, 1925 Patented June 15, 1926.

PATEN T OFFICE.

ETTORE CABETTA, F TURIN, ITALY.

FLEXIBLE TRANSMISSION.

. Application #led November 13, 1925, Serial No. 68,869, ,and in Germany November 18, 1984.

' The present invention relates to a transmission member by which the movement of anoperatingmember is transmitted to a member mounted to move in a receptacle, and has for its Objectsd transmission member of said class adapted to be used in connection withrece tacles in which a pressure is operative, an providing packing means for preventing the escape of said pressure through the transmission member.

According to the present invention the packing member -is mounted adjacent said operatin member and independent of the receptac e; the present invention also comprises a construction of said packing member wligh provides for an ecient sealmg atits en In the ligure4 of the annexed drawing is shown by way of example an embodiment ofthe present invention..

In said figure, 1 is a receptacle where is mounted a member, not shown, intended to be actuated by the transmission, and 2 is a plug on which is mounted a fitting 3 connected with a tube 4 consisting of a metal wire sheath having a rubber cover in order to p make it impervious to fluids. At the opposed end of the tube 4 is arranged the packing .member throuh which the inner cord or cable 5 of the exible transmission issues to .p outside.

The said packing member comprises'a cylindrical sleeve 6 having'at one end a tubular screwthreaded extension for connection with the tube 4 and a perforated plug 12 screwed in its opposed end, anda smaller plup 7 passed by the cable 5 is screwed in sai tubular plug 12.

On the bottom of the sleeve 6 and against plugs 7 and 12-.are arranged packings 8, v8

el in position by 'washers 9 9 against which bear the ends of a'spring 10 arranged in the intermediate portion of the sleeve 6.

On the sleeve 6 is also provided a lubricating cup 11 which provides for introducing a lubricating or greasy material in the sleeve space in which the spring 10 is lo# cated.

The spring 10 produces the requisite ressure on the packings 8-9 and 8"- an the cord 5 when moved in either direction carries an amount of easy material in either of said packings, this material improving the sealing of the The oord or cable 5 is operated by means of a stud 13 intended to move in a stationary guide member 14.- v Y In view of the arrangement of the packingmembe'r adjacent to the cable actuating member, it is possible to easily overcome the resistance produced by the acking member against movement of the ca 1e 5, this cable being entirely free within its sheath in its portion between the packing member 6 and receptacle 1 and therefore being not subject This featureA sistance of the member controlled y said cable being very small with respect to packing friction resistance); therefore the cable 5 1s not caused'to wave within its sheath along its full extent, which fact would give rise to a large number of contact points between cable and sheath and to a very strong resistance by friction which would prevent f the manipulation by hand of the apparatus.

The described apparatus is adapted to use' in apparatus for inspection from a distance A of the amount of liquid contained ina receptacle under pressure, but ofcourse the present invention is only confined by ap-Y pended claims.

What I claim as my inventionand desire to secure by U. S. Letters Patent is:-

1. A flexible transmission comprising an outer fluid-impervious sheath adapted to be connected with a receptacle under pressure at one end, a packing member at the other .end of said sheath, an`inner transmission' member passing through said sheath and packing member and a member beyond said packing member and vadjacent thereto for actuatin c said inner transmission member.

2..A exible transmission vcomprising an outer fluid-impervious sheath adapted to be connected with a receptacle under pressure atione end, a acking member at the other end of said sllieath, an inner transmission member passing through said sheath and packing member and a member beyond saidy packing member and adjacent. thereto for actuatin said inner transmission member, said pac ing member comprising Va sleeve and a packing gland at each end of said sleeve and said packing glands leaving an intermediate space for reception of greasy material.

3. A flexible transmission comprising an outer Huid-impervious sheath adapted to be connected with a receptacle under pressure at one end, a packing member at the other end of said sheath, an inner transmission member passing through said sheath and 

